Custom columns.

[eahangari-8x8]

Is your feature request related to a problem? Please describe.
There is no problem, and I love k9s.

Describe the solution you'd like
I would like to have more control on the views of the resources and the most important one is node view, I like to be able to show the instance type taints and Availability zones in my eks clusters.( AZ is really important )

Describe alternatives you've considered
Currently I have to open another shell to use kubectl to get my information. I tried the views.yaml but it seems it is not working as I expected.

Additional context
N/A

views:
   v1/nodes:
      columns:
          - Capacity-Type: .metadata.labels.eks\.amazonaws\.com/capacityType
          - Instance-Type: .metadata.labels.eks\.amazonaws\.com/instance-type
          - AZ: .metadata.labels.topology\.kubernetes\.io/zone